Low-friction, low-torque wheel hub seals for new energy vehicles

Abstract

This utility model discloses a low-friction, low-torque wheel hub seal for new energy vehicles, including an outer ring. The top of the outer ring has a groove, and the inner side of the groove has a deformation ring. One side of the top of the deformation ring has a notch, and ear plates are provided on both ends of the notch. The inner wall of the groove has symmetrically formed slots on both sides, and insert blocks are provided inside the slots. The outer wall of the outer ring has multiple sealing lips, and the bottom of the outer ring has a rotating ring. The top of the rotating ring has a biting ring, and the bottom of the outer ring has a biting groove. The bottom of the rotating ring has an oil seal layer. This utility model, through a series of structural features, eliminates the need for hammering the seal, reducing the installation difficulty and time of the wheel hub seal. It also reduces the probability of bearing end-face wear and minimizes interference with bearing torque conversion caused by severe bearing end-face wear.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a low-friction, low-torque wheel hub seal for new energy vehicles. Background Technology

[0002] Wheel hub seals are mainly used for sealing components in automotive wheel hub units, such as wheel hub bearings and motors, to prevent problems such as water leakage, dust, and grease leakage. In recent years, with the development of new energy vehicles, the bearings connected to the electric motor can rotate at higher speeds because the electric motor drives the new energy vehicles. However, the existing traditional fuel vehicle wheel hub seals cannot meet the sealing requirements of the wheel hub bearings that rotate at higher speeds, and improvements are urgently needed.

[0003] When existing wheel hub seals are installed on the wheel hub bearings of new energy vehicles, the seals typically use a metal skeleton oil seal structure. While this ensures good stability, the fixed shape of the seal means that it needs to be hammered into place to secure it to the bearing. This hammering process can easily deform the seal, and this installation method is time-consuming and labor-intensive. In addition, the side of the existing wheel hub seal that contacts the bearing is usually integrated with the seal. Although this side is polished to make it smooth, the bearing's end face is prone to severe wear due to frequent contact and rotational friction, which can interfere with the conversion of wheel hub torque. Utility Model Content

[0004] The purpose of this utility model is to provide a low-friction, low-torque wheel hub seal for new energy vehicles, so as to solve the problems mentioned in the background art, such as the time-consuming and laborious installation of the seal, the large friction generated, and the interference of wheel hub torque.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-friction, low-torque wheel hub seal for new energy vehicles, comprising an outer ring, a groove at the top of the outer ring, a deformation ring on the inner side of the groove, a notch on one side of the top of the deformation ring, ear plates on both ends of the notch, symmetrical slots on both sides of the inner wall of the groove, insert blocks inside the slots, multiple sealing lips on the outer wall of the outer ring, a rotating ring at the bottom of the outer ring, a biting ring at the top of the rotating ring, a biting groove at the bottom of the outer ring, and an oil seal layer at the bottom of the rotating ring.

[0006] Preferably, the deformation ring is movably embedded in the groove via an ear plate, and the deformation ring is movably embedded in the outer ring via the groove.

[0007] Preferably, the insert block is slidably connected to the slot, and the insert block is movably embedded in the outer ring through the slot.

[0008] Preferably, the insert block is fitted to the side wall of the ear plate, and a semi-circular groove is formed on the side wall of the ear plate near the insert block.

[0009] Preferably, the biting ring is rotatably connected to the biting groove, and the rotating ring is rotatably connected to the outer ring through the biting ring.

[0010] Preferably, the top surface of the semi-circular groove is flush with the top surface of the ear plate, and the top surface of the ear plate is flush with the top surface of the groove.

[0011] Preferably, both ear plates are movably connected to the groove via deformation rings.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This low-friction, low-torque wheel hub seal for new energy vehicles, through its outer ring, deformation ring, groove, and insert, allows the rubber outer ring to smoothly embed into the bearing end face inside the wheel hub when the seal is fitted onto the bearing. Then, the deformation ring is pushed into the groove, and the insert is inserted into the notch of the deformation ring, thus fixing the deformation ring and securing the outer ring to the end face of the wheel hub bearing. This eliminates the need for hammering the seal, reducing the installation difficulty and shortening the installation time.

[0014] 2. This low-friction, low-torque wheel hub seal for new energy vehicles, through the design of a rotating ring, a biting ring, and a biting groove, allows one side wall of the seal that is in contact with the end face of the wheel hub bearing to rotate with the bearing. This transforms the friction from the friction between the bearing end face and the side wall of the seal into friction within the seal, reducing the friction experienced by the bearing end face. This lowers the probability of bearing end face wear and reduces interference with bearing torque conversion caused by severe bearing end face wear. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the rotating ring and biting ring structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the groove and slot structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the deformation ring and ear plate structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the sealing lip and bite groove structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the insert block and semi-circular groove structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the oil seal layer structure of this utility model.

[0022] In the diagram: 1. Outer ring; 2. Deformation ring; 3. Groove; 4. Insert block; 5. Sealing lip; 6. Rotating ring; 7. Biting ring; 8. Slot; 9. Ear plate; 10. Semicircular groove; 11. Notch; 12. Biting groove; 13. Oil seal layer. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] like Figures 1 to 7As shown, this embodiment of the low-friction, low-torque wheel hub seal for new energy vehicles includes an outer ring 1. The outer ring 1 is made of rubber, and its outer diameter is slightly larger than that of the bearing inside the wheel hub. This ensures that the outer ring 1 has sufficient material to seal the bearing end face when it is embedded in the bearing end face inside the wheel hub. A groove 3 is provided at the top of the outer ring 1. The groove 3 has an annular structure, allowing the deformation ring 2 to be embedded into the outer ring 1 through metal deformation. The deformation ring 2 is provided inside the groove 3. The deformation ring 2 is made of an elastic alloy material and is not easily affected by external temperature factors, making it less prone to thermal expansion and contraction. This helps the shape of the seal to remain basically unchanged. A notch 11 is provided on one side of the top of the deformation ring 2. The function of the notch 11 is to insert a plug 4, which fills the notch 11 of the deformation ring 2, allowing the deformation ring 2 to maintain the outer ring 1 in a fixed and open state. Ear plates 9 are provided on both ends of the notch 11. The groove 3 is designed to facilitate operation on the end face of the notch 11 of the deformation ring 2. The inner wall of the groove 3 has symmetrical slots 8 on both sides, and the slots 8 contain insert blocks 4. The insert blocks 4 fill the notch 11. The outer wall of the outer ring 1 has multiple layers of sealing lips 5 made of polyurethane material, which protrude from the outer surface of the outer ring 1, allowing the seal to be firmly attached to the inner wall of the hub. The bottom of the outer ring 1 has a rotating ring 6 with the same diameter as the outer ring 1. The top of the rotating ring 6 has a biting ring 7 with a "T"-shaped cross-section, ensuring its connection with the outer ring 1. The bottom of the outer ring 1 has a biting groove 12, which allows the rotating ring 6 to engage with the outer ring 1. The bottom of the rotating ring 6 has an oil seal layer 13, which separates the lubricating oil in the bearing from the rotating ring 6, reducing the probability of aging of the outer surface of the seal due to interference from the lubricating oil in the hub bearing.

[0027] Specifically, the deformation ring 2 is movably connected to the groove 3 via the ear plate 9, and the deformation ring 2 is movably connected to the outer ring 1 via the groove 3. The deformation ring 2 can be separated from the outer ring 1, so that the outer ring 1 can be more quickly embedded into the bearing on the inner side of the wheel hub for installation.

[0028] Furthermore, the insert 4 is slidably connected to the slot 8, and the insert 4 is movably embedded in the outer ring 1 through the slot 8. The function of the insert 4 is to limit the ear plate 9 on the deformation ring 2, so that the deformation ring 2 can maintain a stable shape within the slot 3.

[0029] Furthermore, the insert 4 fits against the side wall of the ear plate 9. A semi-circular groove 10 is provided on the side wall of the ear plate 9 near the insert 4. The function of the semi-circular groove 10 is to facilitate the insertion 4 to be pulled out between the two ear plates 9, thereby facilitating the subsequent removal of the deformation ring 2 from the groove 3.

[0030] Furthermore, the bite ring 7 is rotatably connected to the bite groove 12, and the rotating ring 6 is rotatably connected to the outer ring 1 through the bite ring 7. The bite ring 7 can rotate within the bite groove 12, and the bite groove 12 is filled with grease, which reduces the friction when the bite ring 7 rotates within the bite groove 12, thereby reducing the probability of seal wear.

[0031] Furthermore, the top surface of the semi-circular groove 10 is flush with the top surface of the ear plate 9, and the top surface of the ear plate 9 is flush with the top surface of the groove 3, so that the ear plate 9 will not interfere with the top of the groove 3, thereby ensuring the normal use of this seal.

[0032] Furthermore, both ear plates 9 are movably connected to the groove 3 via deformation rings 2, which facilitates the ear plates 9 to pull the deformation rings 2 out of the groove 3, thereby enabling the quick assembly and disassembly of the wheel hub seal.

[0033] The method of use in this embodiment is as follows: When installing this seal to the inner side of the wheel hub of a new energy vehicle, the outer ring 1 can be pushed and embedded into the bearing end face inside the wheel hub first. Then, the two ear plates 9 on the deformation ring 2 can be pinched to make the deformation ring 2 elastically deform. Next, the deformation ring 2 can be pushed and embedded into the groove 3 of the outer ring 1. Then, the ear plates 9 can be released to make the deformation ring 2 return to its original position. At this time, the returned deformation ring 2 will open the outer ring 1 through the groove 3, so that the sealing lip 5 on the outer wall of the outer ring 1... After the inner wall of the hub is gripped, the insert 4 can be inserted into the slot 8 so that the side wall of the ear plate 9 is in contact with the side wall of the insert 4. The installation of this seal is completed when the top surface of the insert 4 and the top surface of the ear plate 9 are flush with the top surface of the groove 3. At this time, the oil seal layer 13 on the seal will be in contact with the end face of the bearing inside the hub. When the bearing rotates, it will drive the rotating plate to rotate, so that the rotating plate drives the gripping ring 7 to rotate in the gripping groove 12, so that the rotation of the bearing is not easily interfered with by the seal.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A low-friction, low-torque wheel hub seal for new energy vehicles, comprising an outer ring (1), characterized in that: The outer ring (1) has a groove (3) at its top end, and a deformation ring (2) is provided on the inner side of the groove (3). A notch (11) is provided on one side of the top end of the deformation ring (2). Ear plates (9) are provided on both ends of the notch (11). Slots (8) are symmetrically provided on both sides of the inner wall of the groove (3). Insertion blocks (4) are provided inside the slots (8). The outer wall of the outer ring (1) is provided with multiple sealing lips (5). A rotating ring (6) is provided at the bottom of the outer ring (1). A bite ring (7) is provided at the top end of the rotating ring (6). A bite groove (12) is provided at the bottom end of the outer ring (1). An oil seal layer (13) is provided at the bottom end of the rotating ring (6).

2. The low-friction, low-torque wheel hub seal for new energy vehicles according to claim 1, characterized in that: The deformation ring (2) is movably embedded in the groove (3) through the ear plate (9), and the deformation ring (2) is movably embedded in the outer ring (1) through the groove (3).

3. The low-friction, low-torque wheel hub seal for new energy vehicles according to claim 1, characterized in that: The insert (4) is slidably connected to the slot (8), and the insert (4) is movably embedded in the outer ring (1) through the slot (8).

4. The low-friction, low-torque wheel hub seal for new energy vehicles according to claim 1, characterized in that: The insert (4) is attached to the side wall of the ear plate (9), and a semi-circular groove (10) is provided on the side wall of the ear plate (9) near the insert (4).

5. The low-friction, low-torque wheel hub seal for new energy vehicles according to claim 1, characterized in that: The biting ring (7) is rotatably connected to the biting groove (12), and the rotating ring (6) is rotatably connected to the outer ring (1) through the biting ring (7).

6. The low-friction, low-torque wheel hub seal for new energy vehicles according to claim 4, characterized in that: The top surface of the semicircular groove (10) is flush with the top surface of the ear plate (9), and the top surface of the ear plate (9) is flush with the top surface of the groove (3).

7. The low-friction, low-torque wheel hub seal for new energy vehicles according to claim 1, characterized in that: Both ear plates (9) are movably embedded and connected to the groove (3) through deformation rings (2).

Images